Releasing and clutching mechanism for presses and the like



J. ULFELDT. v RELEASING AND CLUTCHING MECHANISM FOR PRESSES AND THE LIKE.

APPLICATION FILED JUNE 6, 1918.

1,333,689. Patented Mar. 16, 1920.

I mall/F.1d

J E IQEQAsrNG AN1 cLti"i c ING ma manmi' ssssswn rnEfLrKi 1 7 To alli ohom it may concern:

. li II F me. @s mis i WAY:

' 'pr c ments in Releasing rand Clnt'ching- Mecha nism for Presses and-'thei-like and I do hereby declare the follovving to bea'full, clear,

' and exact'description of the invention, such as will enable bthersiskilled in the art-etc, which *itl appertains to""make{ and use" the same; ljreference being lia'cl-to" the accomgp'anyingdrawings, andto letters] or f figures i of reference markedthereon, which format part of this specification. I

,- {The present invention relates to a1 rele'asing mechanism' or clutch for -kcoiijpling 'a' I pawls so thatthe same engage-161 dlsengageshaft-Ito a driving" mechanism ",inclos'ingthe same such'a's a fly-Wheelorthe like;and par ,20

ticul arly is adapted as releasing inechanisin for presses and slmilarfl mach nery lished by means of pawls or. the like located in recesses 1 Lin 7 the shaft and actuated by: springs which tend topresssaid p'awls 1n an outward-,direc'tion into recesses or against teeth in the inclosing driving member.- i

Acc'ordin to. the invention the pawl s b esides thes'a1d notchesio'r teethin the dr vmg the drivin' memberl form of the invention; V, r lsidejview on the 'Onpthel rawing islillustr at daprefrred Figure 11 is a section line I'+ I of Fig.2. Y FigQQ across section on the line II II of Fig. Land 4 v Figs-3 and 4 respectively show side-viewfl and frontviewioi; the releasing ringr I v 5' As seen'onfFigiQ-2 shaft 1-.is'providedwith 3 pawls 2'located in recessesj in. said shaftand engaged: by spring actuated pins 3 Wh1ch I Y beenshopped.

tend to'cpress thepawls radially outward;

With their free'ends the pawls' engage 'the" inner surface-of Lthe" hub410f a pnlleyfor fly wheel, and the same inner-surface is provided Withfnotches 'or teeth l3- which may be engaged'by' the freeiendsjof pawlsfl; j

med; Julie ,1918; Serial No. 238,592 r apparatus".'jac'cording' 110* "the: invention bei, longs togtheftype' inzlwhich the; connection; betweensha ftz'and driving member'is estab-.

irotation of'shaft 1'.

V vshaft lby means-ofiannnlarscrew springs Be it known *that 1,1J0HA'N ULrELp'r 1 subjectof thQKing'bfNOrway, residin'g at 7 StavangenintheKingdom of orway,have :invented certain new, and useful Improve- 6 placedjiny an' annular groovei'in a ring *7 springs; is fastened tojring 7 While the other jendis' -fastened'to ring 5;: QZ Said ring5 011m; exterior circumference isr-provided With a notch-8, which'mayibe said1iing iir'snclr a position With regard: to

shaft- 1 that the interior cani faces 11 mainc tam the paivlspressed-intotheir interior p0;

' fastenedon shaftL- One end of the said sition'; so;' that 1 they are {out of engagement {I with thenotches or teeth at the in'sideofhubff I 42=Thefiy wheel or pulley: in that case runs A Ii' the pawl is now pulled downinto the freei position indicated on the chewing," ring 5 is {fall into; theinte'rior notches 126i ringf5 en- H gagingfat-thesaine'timethe notches:infthe i inner snrfacejoffhnb 4, so 'thatthei'shaft is j connected with the samefand rotatedf 'Rin 7 5 follows ish aft 1', until it is again "stopped -3" by pawl 9 and pushed back so that the-'pawls 2 aredis'engaged fromthe hub;

; The pavv1f9'as Will-be notedbesides dise'n- V gaging pawlsl2 also acts, directly to stopthe v .It will be nnderstood,;ofcourse, that the 'partlyj-ftnrned; by 'means' of spring 1; or 'springsjfi intoxsucha position thatp'awls 2 'S,0.--

press or machine With'whichthe clutch is stopped immediately, by a'boss 13 pr0videdv onithe sha ft l in such -a manner that "it pushespa vl 9 outiofengagement with n'otchi 8iiif-thesh'aft is "still rotating thus releasing I the shaft to make; another revolution, and

this action is continned.nntilthe shaft hasv 1, 1Ina clutching mechanism, driven shaft, a driving member; loosely mountedf'iflj thereon P gaCtnated pawls on said-shaft, I

teethin said driving member, said pawls 1-1 0 ali d teeth serving to co'nple the shaft and the driving. member together, a notchedring g adjustably mounted about said shaft, "the teeth in said driving member and j the notches in said ring beingada'pted to engage said pawls, a collar memberdlspose'd on sa d shaft, and a spring acting on said ring and housed 1n said collar member connected W1th said shaft;- r a v 2; In aclutchlng mechan sm, a drlven shaft, a driving flywheel loosely mounted teeth in said driv-in-g member, ,saidpawls and teeth serving to couple ,the shaft and the vdriving fmember together, a notohed ring ad thereon, spring actuated pawls on said shaft, teeth in the hub of said fly wheehsaid pawls and teeth serving to couple the shaft and the flywheel together, a' notched ring xially alinedwith said shaft'and bearingyon' said' paivls, the teeth insaid driving member and i a the notches in saidL ring being adapted to en gage said pawls, la collar member rigidly connected Withsaid shaft, said-collar being formed with-an-annularrecess, and a num;

ber of spiral arcuate springs acting on said 7 member.

3. In a clutching mechanism, a drivenshaft, adriving member-loosely mounted thereon, spring actuated pawlsin; said shaft, teeth in sald driving member, saidpawls and teeth serving to couple the shaftand 1 driving member together, a notched ring ad justab ly mounted; about said shaft, theiteeth in saidgdriying member and "the notcheslin a spring disposed ins'aid collar" and acting to hold the ring in jsuch positionthat the and housed in the recess in said collar that the pawls are disengaged, from the teeth, and'means for automatically releasing said manually operated pawl to prevent inury t0 the mechanism mover-running.

' 4t. In clutching mechanism a driven "shaft, 'a' driving member loosely mounted thereon, spring actuated pawls on said shalt,

justably mou nte d about said shatt and rotating therewith, the teeth in saidldrwing anemberI-ancl the notches insaid rmgbeang adapted toengage said pawls, a spring connected tothc shaft and to the ring anc'ladapted to move and maintain the ring in such position that the spring actuatetl paivls are thrown into engagement with theteetlna notchcn the outeruperipheryjof said ring and an independently actuatedj pawl adapted to Y engage dn said notch to hold said ring to retract the pawls in the shattso as to unclutcli, a-bossbeing provided on the shaft to remove the independently. actuated paw-l and release the wing after the coupling paivls have been-removed from their teeth.

lntes'timony that I claim the foregoing [as my invention, I lia exsigned myname in presence ogt two subscrib ng itnesses.

lllitnesses zl f e I C aanpns Eommn,

Dfirflmn: GAINER,

.JOHAN, ULFELDT- 

